JP6602686B2 - Intercom system - Google Patents

Description

  The present invention relates to an intercom system used for privacy protection and the like.

  2. Description of the Related Art Conventionally, in order to improve a security function, there is an intercom system having an entrance cordless handset provided with a camera and a living room base phone capable of receiving and displaying an imaging signal of the camera. In addition, there is an intercom system in which a wide-angle lens is provided in an entrance cordless handset in order to easily find a suspicious person around the entrance (see Patent Document 1).

JP 2009-230318 A

  However, in the interphone system in which the entrance cordless handset is provided with a wide-angle lens as in Patent Document 1, the vicinity of the entrance of the adjacent dwelling unit where the entrance cordless handset is installed may be included in the imaging range. In this case, a visitor to the adjacent dwelling unit may be reflected on the display unit of the living room master unit, which is not preferable from the viewpoint of privacy protection.

  Then, an object of this invention is to provide the intercom system which can protect the privacy of an adjacent dwelling unit.

In order to achieve the above object, the intercom system of the present invention provides:
An entrance cordless handset having an imaging unit capable of capturing a plurality of wide images each having a different angle of view;
A room master capable of receiving and displaying a wide image captured by the imaging unit;
With
The entrance unit determines a field angle of a wide image captured by the imaging unit based on setting information set via the living room base unit.

  According to this configuration, for example, a contractor or a resident who installs an interphone sets an appropriate angle of view for the wide image displayed on the base unit in consideration of the distance between the entrance of the adjacent dwelling unit. can do. For this reason, the privacy of the adjacent dwelling unit can be protected.

In the intercom system of the present invention,
The room master is
A setting unit for setting the setting information for setting an angle of view of a wide image captured by the imaging unit;
A transmission unit capable of transmitting the setting information to the entrance cordless handset;
Have
The entrance cordless handset is
A receiving unit for receiving the setting information transmitted from the transmitting unit;
A storage unit for storing the setting information;
Have
The imaging unit may determine an angle of view of a wide image captured by the imaging unit based on the setting information stored in the storage unit.

  According to this configuration, a trader or a resident who installs the intercom can set an appropriate angle of view by operating the living room master.

In the intercom system of the present invention,
The room master is
A display unit for displaying the wide image transmitted from the entrance cordless handset,
An operation unit for performing an operation for enlarging a part of the wide image displayed on the display unit and displaying it as a zoom image;
Have
The entrance unit may set the display range of the zoom image so as not to exceed the imaging range of the wide image.

  According to this configuration, it is possible to prevent a zoom image that is partially missing from being displayed on the display unit.

In addition, the intercom system of the present invention is
In each of the plurality of wide images, a plurality of display ranges of the zoom image are set, and a central position of at least a part of the display range of the zoom image is on an angle coordinate axis that defines an angle of view of the wide image. It may be the same.

  According to this configuration, it is not necessary to prepare distortion correction information for each wide image having a different angle of view, and the correction process can be simplified.

  According to the intercom system of the present invention, the privacy of adjacent dwelling units can be protected.

It is a block diagram of the intercom system which concerns on embodiment of this invention. It is a functional block diagram of an intercom system. It is the figure which showed the display range of the image | video imaged with the camera of an entrance child machine seeing from the upper side of a visitor. (A)-(c) is a figure which shows each touch area of the zoom image which can be selected in each wide image. It is a figure which shows the center position of the zoom image in the angle coordinate of a view angle. (A)-(c) is a figure which shows the center position of the zoom image on each wide image.

Hereinafter, an example of this embodiment will be described with reference to the drawings.
As shown in FIG.1 and FIG.2, the intercom system 1 is provided with the entrance subunit | mobile_unit 2 installed in the dwelling unit entrance, for example outside a dwelling unit, and the living room main | base station 3 installed in a dwelling unit. The entrance cordless handset 2 and the room base phone 3 are connected via a signal line L. The intercom system 1 is installed in each dwelling unit in an apartment house such as a detached house or a condominium.

  The entrance slave unit 2 includes a camera 21, a slave unit video processing unit 22, a storage unit 23, a call button 24, a call unit 25, a slave unit power supply unit 26, a slave unit CPU 27, and a slave unit interface (hereinafter referred to as a slave unit interface). The interface is referred to as IF.) 28.

  The camera 21 is for capturing an image of a visitor who has performed a call operation (including an image near the vicinity of the entrance to the dwelling unit), and includes a lens 21a and a light receiving unit 21b. A wide-angle lens that can capture a wide range of images is used as the lens 21a. The light receiving unit 21b includes an image sensor that generates an electrical signal (video signal) according to the intensity of light transmitted through the lens 21a.

  The slave unit video processing unit 22 performs signal processing on the video signal transmitted from the light receiving unit 21 b of the camera 21 and transmits the processed signal to the room master unit 3. For example, the slave unit video processing unit 22 performs angle-of-view processing for converting the video signal transmitted from the light receiving unit 21b into a wide image of the selected angle of view. In addition, the child device video processing unit 22 performs size processing for setting the wide image subjected to the angle of view processing to a predetermined image size. Moreover, the subunit | mobile_unit image | video process part 22 performs the zoom image process for expanding and displaying a part of wide image as a zoom image. Further, the child device image processing unit 22 performs processing such as distortion correction of a video displayed as a wide image and a zoom image. The camera 21 and the handset image processing unit 22 constitute an example of an imaging unit that determines the angle of view of a wide image.

  The storage unit 23 stores correction parameters used when correcting distortion of video. The correction parameters are stored in a manner such as a parameter group related to distortion correction, and are stored in association with each other so that the distortion correction in the video is optimized for each wide image and each zoom image to be displayed. ing. In addition, the storage unit 23 stores setting information for setting the angle of view of the wide image set on the side of the living room master unit 3. Further, the storage unit 23 includes each touch area in the display unit 33 (to be described later) of the living room base unit 3 divided to select a part of the wide image, and the center of the zoom image displayed in accordance with the selection. The coordinate points of the positions are stored in association with each other.

  The call button 24 is a button operated by a visitor to call a resident. The calling unit 25 is for a visitor to make a call with a resident, and includes a microphone 25a and a speaker 25b. The subunit | mobile_unit power supply part 26 receives the electric power supplied from the living room main | base station 3, and supplies the operating power of a predetermined level to each part of the entrance subunit | mobile_unit 2. FIG. The slave CPU 27 controls the operation of each part constituting the entrance slave 2. The slave unit IF 28 (an example of a receiving unit) provides signal transmission paths between the slave unit CPU 27 and the living room master unit 3, between the slave unit video processing unit 22 and the sitting room master unit 3, and between the slave unit power supply unit 26 and the sitting room master unit 3. Form.

  The room base unit 3 includes a setting unit 31, a base unit video processing unit 32, a storage unit 32A, a display unit 33, a switching button 34, a call button 35, a call unit 36, and a base unit power supply unit 37. The main unit CPU 38 and the main unit IF 39 are provided.

  The setting unit 31 sets setting information for setting the angle of view of a wide image captured by the camera 21 of the front door set 2. The angle of view refers to an imaging range angle on the horizontal axis (on the horizontal axis) that can be captured by the camera 21. The angle of view of the wide image is configured so that it can be arbitrarily selected from a plurality of types of angles of view. The setting unit 31 is formed of a switch that can be switched and set, for example. In this example, the setting unit 31 is provided inside the housing of the living room base unit 3 and is configured so that a person other than the trader who installs the intercom system 1 cannot operate. When the trader switches the switch, the angle of view of the wide image that is the setting information is set. However, the setting unit 31 may be configured to be arbitrarily switched by a user (resident).

  The base unit video processing unit 32 performs signal processing for outputting the video signal transmitted from the entrance slave unit 2 to the display unit 33. The storage unit 32A stores information on the angle of view of the wide image set by the setting unit 31, information on the position on the display unit 33 designated to be enlarged and displayed as a zoom image, and the like.

  The display unit 33 displays the video signal transmitted from the parent device video processing unit 32 as a wide image or a zoom image. The display unit 33 is configured by, for example, an LCD (Liquid Crystal Display), an organic EL (Electro Luminescence), or the like. On the display unit 33, for example, a touch panel (an example of an operation unit) 33A that is operated to enlarge a part of the wide video and display it as a zoom image is provided.

  The switch button 34 is a button operated to switch the zoom image displayed on the display unit 33 to a wide image. The switching button 34 is provided as, for example, a touch-operated button displayed on the display unit 33 or a push-down button arranged on the housing of the living room base unit 3.

  The call button 35 is a button for responding to a call from a visitor. The call unit 36 is for a resident to make a call with a visitor, and includes a microphone 36a and a speaker 36b. The master unit power supply unit 37 supplies a predetermined level of operating power to each unit of the living room master unit 3 and also supplies power to the slave unit power supply unit 26 of the entrance slave unit 2. The master CPU 38 controls the operation of each part constituting the living room master 3. The base unit IF 39 (an example of a transmission unit) establishes signal transmission paths between the base unit CPU 38 and the entrance slave unit 2, between the master unit image processing unit 32 and the entrance slave unit 2, and between the master unit power source unit 37 and the entrance slave unit 2. Form.

  In this example, as shown in FIG. 3, the wide image that can be displayed on the display unit 33 of the living room base unit 3 has an angle of view of 170 ° or 150 ° in the imaging range captured by the camera 21 of the front door unit 2. Or, it is set so that it can be selected from three types of wide images of 120 °. The display ranges of the selected wide images (referred to as 170 ° wide image, 150 ° wide image, and 120 ° wide image) are display ranges 43, 42, and 41 indicated by arrows in FIG. 3, respectively. The image displayed on the display unit 33 as a wide image is an image (image of an imaging range of at least 170 ° or more) captured by the slave device image processing unit 22 with the camera 21 with an angle of view of 170 °, 150 °, 120 The left and right ends are cut so as to be at 0 °, and the image size is processed so that the size of the image matches the total display size of the display unit 33. The image size processing is performed not only in the horizontal size processing in the display unit 33 but also in the vertical size processing as necessary.

  For example, as shown in FIGS. 4A to 4C, the display unit 33 provided with the touch panel 33A is enlarged (zoomed) in a 170 ° wide image, a 150 ° wide image, and a 120 ° wide image. As an area that can be displayed (as an image), it is divided into a plurality of touch areas. 4A shows a touch area into which a 170 ° wide image is divided, and FIG. 4B shows a touch area into which a 150 ° wide image is divided, and includes 25 touch areas from 1 to 25. It is divided into touch areas. FIG. 4C shows a touch area into which a 120 ° wide image is divided, and the touch area is divided into nine touch areas 1 to 9. The display unit 33 is configured to be able to enlarge and display the touched touch area as a zoom image by touching any part in each touch area.

  When each touch area is enlarged and displayed as a zoom image, the area displayed on the display unit 33 is not only the selected touch area as shown in FIG. 4 but also the touch area adjacent to the touch area. Some may be included. For example, as shown in FIGS. 4A and 4B, when the touch area 11 is selected as an area to be enlarged, not only the touch area 11 but also the adjacent touch areas 6, 7, 12, 16, Display areas 51 and 52 including a part of 17 are displayed on the display unit 33 as a zoom image. Similarly, when the touch area 13 is selected in FIG. 4A, a display area 53 including a part of the touch areas 7 to 9, 12, 14, and 17 to 19 is displayed. When the touch area 4 is selected in FIG. 4C, a display area 54 including a part of the touch areas 1, 2, 5, 7, and 8 is displayed. In this example, an area displayed in a square shape with a broken line at the lower right of each wide image is a switching button 34 for switching the image displayed as the zoom image to the wide image.

  Of the correction parameters stored in the storage unit 23, correction parameters used for correcting each zoom image are stored for each point on the angle coordinates of the angle of view as shown in FIG. The angle coordinate of the angle of view is a coordinate that is expressed on the imaging area captured by the camera 21 of the front door 2 and is a coordinate that defines the angle of view of the wide image. Each coordinate point shown on the angle coordinate in FIG. 5 indicates the center position of each zoom image that can be displayed on the display unit 33 of the office base unit 3 by selection. The distortion correction parameter for each zoom image is stored in the storage unit 23 in association with the center position of each zoom image in the angle coordinates.

  In addition, as shown in FIGS. 6A to 6C, these coordinate values indicating the center position are used as points indicating the center position of the zoom image even in the X and Y coordinates on each wide image. . For example, the coordinate point (−28, 0) shown in FIG. 6A indicates the center position of the display area 51 displayed as a zoom image in a 170 ° wide image, and the angle coordinate point (−28, 0) in FIG. 0). Further, the coordinate point (−28, 0) in FIG. 6B indicates the center position of the display area 52 displayed as a zoom image in the 150 ° wide image, and the angle coordinate point (−28, 0) in FIG. 0). Furthermore, the coordinate point (−14, 0) in FIG. 6C indicates the center position of the display area 54 displayed as a zoom image in the 120 ° wide image, and the angle coordinate point (−14, 0) in FIG. 0).

  Therefore, for example, when the touch area 11 is selected on the display unit 33 displaying a 170 ° wide image (see FIG. 4A), the coordinate point that is the center position of the display area 51 displayed as a zoom image (−28, 0) is specified (see FIG. 6A), and the correction parameter associated with the center position (coordinate point (−28, 0)) is read from the storage unit 23. When the touch area 11 is selected in the 150 ° wide image (see FIG. 4B), the coordinate point (−28, 0) that is the center position of the display area 52 displayed as the zoom image is specified. As in the case of a 170 ° wide image (see FIG. 6B), the correction parameter associated with the center position (coordinate point (−28, 0)) is read from the storage unit 23.

  Similarly, when the touch area 12 is selected in the 150 ° wide image (see FIG. 4B), the coordinate point (−14, 0) that is the center position of the display area 55 displayed as the zoom image is specified. (See FIG. 6B), the correction parameter associated with the center position (coordinate point (−14, 0)) is read out. When the touch area 4 is selected in the 120 ° wide image (see FIG. 4C), the coordinate point (−14, 0) that is the center position of the display area 54 displayed as the zoom image is specified. As in the case of the touch area 12 of the 150 ° wide image (see FIG. 6C), the correction parameter associated with the center position (coordinate point (−14, 0)) is read out.

  For example, the center position of the touch area 12 located near the center of the display unit 33 is set to coincide with the center position of the display area 55 (see FIGS. 4B and 6B). . On the other hand, for example, the center position of the touch area 11 located in the peripheral portion of the display unit 33 does not coincide with the center position of the display areas 51 and 52 (FIGS. 4A, 4B, 6). (See (a) and (b)). In addition, the display areas (for example, display areas 51 to 56) of all zoom images selected in each wide image are set to be areas that do not exceed the imaging range of the wide image (FIGS. 4 and 4). 6). In addition, the maximum wide-angle imaging range (170 ° wide image in this example) is set to be an area larger than the display area that can be displayed by adding the display areas of all zoom images (see FIG. 4 (a) and FIG. 6 (a)). For example, the peripheral part of the 170 ° wide image shown in FIGS. 4A and 6A is not included in the display area that can be displayed as a zoom image.

Next, the operation of the intercom system 1 will be described.
When the intercom system 1 is first installed in a dwelling unit by an installation contractor, the setting unit 31 provided in the living room base unit 3 is set. This setting is performed by determining the display range (angle of view) of the video imaged by the camera 21 of the entrance cordless handset 2 so that, for example, a visitor to the neighbor is not reflected on the display unit 33 of the living room base unit 3. Done. The set setting information is transmitted to the entrance child device 2 via the parent device IF 39 and stored in the storage unit 23.

  Subsequently, when a visitor operates the call button 24 of the entrance cordless handset 2, a start signal is transmitted from the handset CPU 27 to the camera 21, and an imaging operation by the camera 21 is started. In addition, the imaged video signal is transmitted to the child device video processing unit 22. The subunit | mobile_unit image | video process part 22 performs a view angle process for making the display range of a wide image become the said set view angle based on the setting information memorize | stored in the memory | storage part 23, and also a view angle Size processing is performed so that the size of the processed wide image matches the total display size of the display unit 33. Further, the child image processing unit 22 reads out the distortion correction parameters stored in association with the wide image from the storage unit 23, and performs distortion correction processing on the size-processed wide image. The processed video signal is transmitted to the living room master unit 3 through the slave unit IF 28 together with the calling signal.

  In the living room master unit 3, a ringing sound is output from the speaker 36 b of the calling unit 36 in response to the reception of the calling signal, and a video signal subjected to distortion correction or the like is displayed on the display unit 33 as a wide image. The office base unit 3 can make a call with the entrance terminal 2 by pressing the call button 35.

  Subsequently, when a zoom operation for enlarging and displaying a part of the wide image displayed on the display unit 33 is performed, the intercom system 1 performs the following operation.

<Operation 1>
For example, when a 170 ° wide image is displayed on the display unit 33 (see FIG. 4A), when a part of the touch area 12 is touch-operated, the coordinate data of the touched position is converted to the entrance unit 2. Sent to.

  When the slave image processing unit 22 receives the coordinate data, the slave device image processing unit 22 identifies the touch area 12 having the coordinate point at the center position closest to the coordinate data. In addition, the slave unit image processing unit 22 reads out the distortion correction parameters stored in association with the angle coordinate point (−14, 0) of the specified touch area 12 from the storage unit 23.

  The slave unit video processing unit 22 uses the display area 56 (see FIG. 4A) corresponding to the identified touch area 12 in the video signal sent from the light receiving unit 21b, and sets the image size of the video. In addition to performing zoom image processing to match the size of the display unit 33, image distortion correction processing is performed using the read distortion correction parameters and the like. The subunit | mobile_unit image processing part 22 transmits the video signal of the processed zoom image to the living room main | base station 3. FIG.

  In the living room master unit 3, the transmitted video signal is displayed as a zoom image on the display unit 33 by the master unit video processing unit 32.

<Operation 2>
For example, when a 150 ° wide image is displayed on the display unit 33 (see FIG. 4B), when a part of the touch area 12 is touch-operated, the coordinate data of the touched position is converted to the entrance unit 2. Sent to.

  Thereafter, the distortion correction parameters stored in association with the angle coordinate point (−14, 0) are read from the storage unit 23 in the same manner as in the operation 1 above, and processing such as image size and distortion correction of the zoom image is performed. As a result, the zoom image is displayed on the display unit 33 of the living room base unit 3.

<Operation 3>
For example, when a 120 ° wide image is displayed on the display unit 33 (see FIG. 4C), when the touch area 4 is touched, the coordinate data of the touched position is transmitted to the front cordless handset 2. The

  When the slave image processing unit 22 receives the coordinate data, the slave device image processing unit 22 specifies the touch area 4 having the coordinate point at the center position closest to the coordinate data. The slave image processing unit 22 reads out the distortion correction parameters stored in association with the angle coordinate point (−14, 0) of the identified touch area 4 from the storage unit 23.

  Then, similarly to the operation 1 described above, processing such as correction of the zoom image is performed, and the zoom image is displayed on the display unit 33 of the office base unit 3.

  Subsequently, when the switching button 34 is touched while the zoom image is displayed on the display unit 33, the intercom system 1 performs the following operation.

  A switching signal indicating that the switching button 34 has been operated is transmitted from the living room master unit 3 to the entrance cordless handset 2. When receiving the switching signal, the slave unit video processing unit 22 reads out the distortion correction parameters stored in association with the wide image from the storage unit 23 and performs processing such as correction of the wide image. The processed video signal of the wide image is transmitted to the room master unit 3. In the living room master unit 3, the transmitted video signal is displayed on the display unit 33 as a wide image by the master unit video processing unit 32.

  According to the intercom system 1 described above, an appropriate angle of view can be set in consideration of the distance between the entrance of the adjacent dwelling unit and the like from a plurality of types of angle of view of wide images prepared in advance. For this reason, for example, it is possible to reduce the possibility that a visitor to the adjacent dwelling unit will be reflected on the display unit 33 of the living room master unit 3, and the privacy of the adjacent dwelling unit can be protected.

  The angle of view of the wide image can be set by operating the setting unit 31 provided in the living room master unit 3. For this reason, the setting unit 31 can be operated while viewing the video displayed on the display unit 33 of the living room master unit 3, so that a more appropriate angle of view of the wide image can be set.

  In addition, the zoom image display area (for example, display areas 51 to 55) is set so as not to exceed the imaging range of the wide image. For this reason, it is possible to prevent a zoom image that is partially missing from being displayed on the display unit 33 of the living room master unit 3.

  By the way, in the configuration in which a wide image to be used can be arbitrarily selected from a plurality of types of wide images having different angles of view, each wide image has a zoom image, a distortion correction parameter, and the like. It is also possible to do. However, in this case, the amount of data to be prepared becomes enormous and the cost increases. Also in the design, a great amount of distortion correction is required, which makes it complicated.

  On the other hand, in the intercom system 1, based on the center position of the zoom image at the angle coordinates of the angle of view (see FIG. 5), the zoom image and its distortion correction parameter are commonly used for wide images with different angle of view. . For this reason, it is not necessary to prepare a distortion correction parameter or the like for each wide image, the amount of data can be reduced, cost increase can be suppressed, and correction processing can be simplified.

  Further, the display area of the 170 ° wide image, which is the maximum wide-angle imaging range, is set to be larger than the display area that can be displayed by adding all the zoom image display areas. For this reason, the zoom image of the 170 ° wide image and the zoom image of the 150 ° wide image can all be used in common, and the data amount of the distortion correction parameter to be prepared can be greatly reduced.

  In addition, a handset image processing section 22, a storage section 23, and a handset CPU 27 are provided on the entrance handset 2 side, and setting information for setting a field angle of a wide image, a selection signal for selecting a display area, and a switch button are operated. The switching signal and the like are transmitted from the living room master unit 3 to the entrance cordless handset 2. For this reason, angle-of-view processing, zoom image processing, distortion correction processing, and the like can be performed on the entrance cordless handset 2 side, and the processing load on the base unit side can be reduced.

  Further, when the setting of the setting unit 31 that determines the angle of view of the wide image has a configuration that cannot be operated by a person other than the installer, the angle of view can be set more appropriately and privacy can be protected. Can do. In addition, when the configuration allows the user to reset the setting unit 31 after installation, for example, even if the arrangement of buildings around the entrance including the adjacent dwelling unit changes, The angle of view can be easily reset to an appropriate angle of view.

  In addition, this invention is not limited to embodiment mentioned above, A deformation | transformation, improvement, etc. are possible suitably. In addition, the material, shape, dimension, numerical value, form, number, location, and the like of each component in the above-described embodiment are arbitrary and are not limited as long as the present invention can be achieved.

DESCRIPTION OF SYMBOLS 1: Intercom system, 2: Entrance cordless handset, 3: Living room main phone 3, 21: Camera, 21a: Lens 21a, 21b: Light-receiving part, 22: Slave image processing part, 23: Storage part, 27: Slave CPU 28: Slave unit IF (an example of a receiving unit), 31: Setting unit, 32: Base unit video processing unit, 32A: Storage unit, 33: Display unit, 33A: Touch panel (an example of operation unit), 34: Switch button , 38: Base unit CPU, 39: Base unit IF (an example of a transmission unit)

Claims (3)

An entrance cordless handset having an imaging unit capable of capturing a plurality of wide images each having a different angle of view;
A room master capable of receiving and displaying a wide image captured by the imaging unit;
With
The room master is
A display unit for displaying the wide image transmitted from the entrance cordless handset,
An operation unit for performing an operation for enlarging a part of the wide image displayed on the display unit and displaying it as a zoom image;
Have
In each of the plurality of wide images having different angles of view, the center position of at least a part of the display range of the zoom image is the same on the angle coordinate axis that defines the angle of view of the wide image, and on the angle coordinate axis The distortion correction parameter for correcting the zoom image having the same center position is commonly used.
Intercom system. The room master is
A setting unit for setting the setting information for setting an angle of view of a wide image captured by the imaging unit;
A transmission unit capable of transmitting the setting information to the entrance cordless handset;
Have
The entrance cordless handset is
A receiving unit for receiving the setting information transmitted from the transmitting unit;
A storage unit for storing the setting information;
Have
The imaging unit determines an angle of view of a wide image captured by the imaging unit based on the setting information stored in the storage unit.
The intercom system according to claim 1. The entrance unit sets the display range of the zoom image so as not to exceed the imaging range of the wide image;
The intercom system according to claim 1 or 2.

Images